<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索添加区域 -->
      <el-row :gutter="10">
        <el-col :span="8">
          <el-input placeholder="请输入搜索内容" v-model="queryInfo.query" clearable @clear="onSearchInputClear">
            <el-button slot="append" icon="el-icon-search" @click="onSearch"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="gotoAdd">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品列表 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="91"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70"></el-table-column>
        <el-table-column label="创建时间" width="140">
          <template v-slot="scope">
            {{dateFormater(scope.row.add_time)}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120">
          <template v-slot="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit"></el-button>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeGoods(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total" background>
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      goodslist: [],
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', { params: this.queryInfo })

      if (res.meta.status !== 200) return this.$message.error('加载商品列表失败！')

      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    onSearch() {
      this.queryInfo.pagenum = 1
      this.getGoodsList()
    },
    onSearchInputClear() {
      this.queryInfo.pagenum = 1
      this.getGoodsList()
    },
    async removeGoods(goods_id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') return

      const { data: res } = await this.$http.delete(`goods/${goods_id}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败！')

      this.$message.success('删除商品成功！')

      if (this.goodslist.length === 1 && this.queryInfo.pagenum !== 1) {
        this.queryInfo.pagenum--
      }

      this.getGoodsList()
    },
    gotoAdd() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
</style>